Lubricator.



LUBRIGATOR.

APPLICATION FILED JDLYza, 1906.

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Nth-897,599. PATENTED SEPT. 1,1908.

R. DAVIDSON.

LUBRIGATOR.

APPLICATION FILED JULYZS, 1906.

3 SHEETS-SHEET 2.

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PATENTED SEPT. l, 1908.

R. DAVIDsoN.

LUBRIGATOR.

APP-LIOATION FILED JULY2e,19os.

3 SHEETS-SHEET s1 nu: Namus FETzRs ca., wAsmNcroN, D. c.

UNITED sTATEs ATENT oEEroE.

ROBERT DAVIDSON, OF DETROIT, MICHIGAN, ASSIGNOR TO MICHIGAN LUBRICATORCO., OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

LUBRICATOR.

To all whom it may concern.'

Be it known that I, ROBERT DAVIDSON, a' citizen of the United States,residing at Detroit, in the county of Wayne, State of Michigan, haveinvented certain -new and useful Improvements in Lubricators; and I dodeclare the following to be a full, clear, and exact description of theinvention, such as will en able others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the figures of reference marked thereon,which form a part of this specification.

This invention relates to hydrostatic sightfeed lubricators of thebulls-eye type, especially designed for lubricating steam chest valvesof locomotives, and consists in the construction and arrangement ofparts hereinafter fully set forth and pointed out particularly in theclaims.

The objects of the invention are to produce a lubricator of thecharacter described, of compact, simple and inexpensive construction,wherein the fittings which support the sight-feed features are formedintegral with the body of the reservoir or cup, thereby obviating theexpense incident to casting said 'fittings separately and the labornecessary to connecting them with the cup.

A further object is to mount the sight-feed features upon the bodyof thereservoir free from the wall thereof so as to place the observationglasses remote from said body to obviate excessively heating the glassesand burning of the oil thereon to such an extent as to obstruct thevision therethrough.

A further object is to provide for passing the oil through the heatedportion of the reservoir after its passage through the sightfeedfeatures, thereby maintaining it in a high state of fluidity.

A further object is to provide cored passages for the oil through theupper portion of the reservoir which connect the oil feed arms with theparts to be lubricated, and to provide independent communication.between each of said cored passages and the steam space of thecondenser.

The aboveobjects are attained by the apparatus illustrated in theaccompanying drawings, in which Figure l is an elevation of a lubricatorembodying my invention. Fig. 2 is a central, vertical section throughthe lubricator, as on line 2 2 of Fig. l. Fig. hisnaufragmentarySpeccaton of Letters Patent.

Application :filed July 23, 1906.

Patented Sept. 1, 1908.

Serial No. 327,310.

view in section as on line 3 3 of Fig. 6. Fig.

'4 is a central longitudinal section throughone of the sight-feedfeatures. Fig. 5 is a plan view of the reservoir with the condenserremoved. Fig. 6 is a horizontal section through the upper portion of thereservoir, as on line 6-6 of Fig. l. Fig. 7 is a vertical sectionalview, as on line 7-7 of Fig. 6.

Referring to thecharacters of reference, l designates the oil cup orbody of the reservoir, which is provided with a suitable condenser 2connected by means of the steam supply pipe 3 with the boiler or steampipe of a locomotive, not shown.

In order to locate the sight-feed features remote from the body of thecup and yet connect them properly thereto in an economical manner, eachof the sight-feed features is connected with the cup by hollowsupporting arms cast integral with the body of the cup which communicaterespectively with the upper and lower ends thereof, the sight-feedglasses being supported in horizontally positioned barrel-like memberswhich are cast integral with said supporting arms, and wherein is formeda sight chamber through which the oil passes.

The lubricator illustrated herein is of the triple feed type, showingthree sight-feed features, there being one upon each of the oppositesides of the body and one in front and all of said sight-feed featuresstanding in the same horizontal plane.

The horizontal barrels 4 upon the sides of the lubricator in which theglasses 5 are confined, are supported by the lower hollow arms 6 whichproject from the reservoir, and .communicate with the interior thereof,their outer ends carrying the T-shaped Jiittings 7 in whose upper endsare located the oil feed nozzles S, and in whose lower ends are screwedthe oil regulating valves 9 whose needle points seat at 10 below saidnozzles and control the passage of oil through the hollow arms 6. Thenozzles S discharge into the sight chambers Il .in the barrel membersbetween the glasses 5, from which chambers lead the short vertical tubes12 that communicate at their upper ends with the hollow arms 13 formedintegral with the upper portion of the body of the reservoir. The armsI3 communicate with the cored oil feed passages 14. within the body ofthe reservoir with which the oil discharge arms15 communicate, the outerends of said arms being connected in a suitable manner with the tallowpipes 16 which lead to the steam chest of the lubricator, not shown. Thecentral sight-feed feature located on the front of the body comprises abarrel member 17 supported by a hollow arm 18 (similar to the hollow arm6 which supports the side sight-feed features) said arm communicatingwith the interior of the reservoir at one end and at the other end withthe sight chamber in the barrel 17 into which the oil nipple 19 extends.The sight chamber in the barrel 17 communicates through the verticaltube 2() with the hollow arm 21, which in turn communicates with thecored passage 22 crossing the interior of the reservoir, whose oppositeend enters the rearwardly extending discharge arm 23 with which isconnected the tallow pipe 24 that leads to the air-brake pump, notshown. The flow of oil through the hollow arm 18 to the nozzle 19 is.controlled by the valve 25, the construction being the same as thatdescribed with respect to the valves 9.

It will now be understood that the several sight-feed chambers and thehollow arms through which they communicate with the reservoir are castintegral with the body of the lubricator, thereby effecting a strong andeconomical structure. The glasses 5 are placed in the opposite ends ofthe barrels to form the transparent walls through which the ascendingdrops of oil may be seen, by seating them in the sleeves 26, which screwinto the opposite ends of the barrels and which are provided with theinwardly extending annular flanges 27 that serve as seats for thewashers 28 against which the inner edges of the glasses bear7 saidglasses being confined in place by the glands 29 which screw into thesleeves against the washers 30 that engage the outer edges of saidglasses, thereby firmly securing the glasses in place and providing forthe ready removal thereof for the purpose of cleaning, when desired.

As is common in lubricators of this type, the water of condensationwhich displaces the oil in the reservoir, is carried downwardly into thereservoir through the pipe 3.1, the upper end of which communicatesthrough the valve chamber 32 (see Fig. 3) with the cored passage 33which leads into the condenser through the top of the reservoir. Thevalve 34 within said chamber controls the passage of the water ofcondensation therethrough and regulates the feeding of the oil bycontrolling the volume of Water which is discharged into the reservoir.The oil as it rises upon the water which is discharged into thereservoir flows into the upper ends of the oil tubes 35 whose lower endscommunicate with the hollow arms of the sight-feed features, as clearlyshown in Figs. 2 and 7. It will bey understood. that in the operation ofthis lubricator, the sight-feed chambers and the upper arms connectingsaid chambers with the oil discharge arms through the cored. passages ofthe the body, will be filled with water so that the drops of oildischarged from the nozzle 8 will pass upwardly through said Waterbetween the observation glasses and flow through the connecting arms andpassages into the tallow pipes in a manner common in the art.

To properlybalance the cup and equalize the pressure upon the water andoil, steam equal- 'izing tubes 36 are employed which project verticallyinto the condenser and communicate at their lower ends with the coredpassages 37 leading into the oil passages 14 in alinement with the oilfeed arms 1 5 which connect with the tallow pipes leading to theopposite steam chests of the locomotive. A third equalizing tube 38within the con denser communicates with the oil passage 22 whichconnects, through its discharge arm, with the tallow pipe leading to theair pump. By this arrangement a perfect balancing is effected and thespurtingof the oil is obviated.

In the operation of this device, the flow of the water of condensationinto the cup through the water tube 31, displaces the oil, causing it topass into the upper ends of the tubes 35 and through said tubes into thehollow arms 6, thence past the valves 9 and into the nozzles 8 fromwhich the oil ascends in drops through the sight-feed chambers and intothe hobllow arms 13, the oil flowing through said arms into the oilpassage ways 14 where it encounters the steam from the equalizing tubesand is carried with the steam through the discharge arms into the tallowpipes. The above explanation detcribes the course of the oil into thetallow pipes of the steam chests of the locomotive. The oil which passesinto the tallow pipe of the air pump after passing through the sightfeed17, enters the passage 22 where it encounters the steam from theequalizing tube 38 and is carried by said steam into the tallow pipe 24which leads to the air pump. By returning the oil through the body ofthe lubricator in proximity to the condenser after it passes through thesight-feed features, it is maintained at a high temperature whichrenders it sufficiently fluid as to insure a perfect feeding thereof. Byremoving the filler plug 39 the reservoir may be replenished with oil.

Each of the sight-feed features is provided with a tapped boss 40 intowhich screws a drain valve 41 that controls the drain passage 42 passingthrough said boss and communicating with the sight chamber. By openingthe valve 41 the water may be withldrawn from the sight chamber whendesire( In the bottom of the reservoir is the ordinary drain cock 43.Auxiliary oilers are provided in the shape of cups 44 which communicatewith the tallow pipes through the apertures 45 in the fittings 46. Theusual valves 47 are provided for said auxiliary oill ers. Projectingfrom the rear of the reservoir is the threaded stud 48 by which thelubricator is mounted in position.

It will be noted that by placing the cored passages 37 which lead intothe oil passages 14, in direct alinement with the oil feed arms 15, theflow of steam fi'om the condenser into the tallow pipes through saidarms does not interrupt or retard the flow of oil through the coredpassages 14 but on the contrary accelerates the passage of the oilthrough said passages, because of the swiftly flowing jets of steamwhich cross the ends of said passagesv 14 into the discharge arms,carrying the oil in said passages therewith.

Having thus fully set forth my invention, what I claim as new and.desire to secure by Letters Patent, isz- 1. ln a locomotive lubricator,the combination with the reservoir, of a sight-feed feature exterior' tothe reservoir, said sight-feed feature consisting of a barrel-likemember lying in a horizontal plane, hollow arms cast integral with thereservoir connecting the barrel-like member with the upper and lowerportions thereof respectively, an oil discharge arm, there being an oilpassage within the top of the lubricator connecting the upper arm of thesight-feed feature with the oil discharge arm, a condenser, and anequalizing tube leading from the condenser and connecting within thereservoir said oil passage way with the steam space of the condenser.

2. In a locomotive lubricator, the combination with the reservoir havingan oil passage in the upper portion thereof, of a sightfeed featurecommunicating with said oil passage, an oil discharge arm leading fromthe discharge end of said oil passage, and a steam" equalizing'tubewithin the reservoir communicating with the discharge end of said oilpassage in direct alinement with said oil discharge arm.

3. In a locomotive lubricator, the combination with the reservoir, of aplurality of sight-feed features exterior to the reservoir and locatedin the same horizontal plane, said sight-feed features consisting ofbarrellike members, hollow arms cast integral with the reservoirconnecting the barrel-like members with the upper and lower portionsthereof respectively, oil discharge arms, there being oil passage wayswithin the top of the lubricator independently connecting the upper armsof the sight-feed features with the oil discharge arms, a condensercommon to all of the sight-feed features, and equalizing tubes leadingfrom the condenser and independently connecting within the reservoirsaid oil passage ways with the steam space of the condenser.

4. In a locomotive lubricator, the combination with the reservoir havingoil passages in the upper portion thereof, of sight-feed featurescommunicating with said oil passages, oil discharge arms leading fromthe discharge ends of said oil passages and steam equalizing tubes'within the reservoir' communicating with the discharge ends of said oilpassages in direct alinement with said oil discharge arms.

In testimony whereof, I sign this specification in the presence of twowitnesses.

ROBERT DAVIDSON.

Witnesses O. B. BAENZIGER, 1. G. HowLErr.

